This paper intends to discuss Chang Liang's wisdom of life by investigating his philosophy of assoiciating with people and the world & his use of strategies in the handling national policy. This paper is divided in five sections: 1.Prologue. 2.Method. 3.To discuss the characteristics of Chang Liang's personal disposition:be respectful of elder and virtuous, moral and justice,dim to title and wealth ,smart and considerate. 4. To discuss the use of strategies when he is a military counsellor: (1)military strategy and tactics--to run the military strange and changeful (2)politics strategy--to run the nation rightly and correctly 5.Conclusion:He who is contented will not suffer disgrace. He who knows his limitations will not incur danger and can endure forever.